Why would the ... care? (spoilers)
I like the movie, but I don't love it. Something's missing. One of the bigger problems I had is with the motivation of the villains. Why would the CIA (or whatever black ops agency sent Smith) care about the discovery of the assassin's corpse, money and gun. It's just like Treat and Kris say - there's nothing to tie the corpse with anything. How the hell would anyone connect the remains in the jeep and the other stuff inside with the assassination? How is multiple killing of f-ing border patrol cops, dragging military into the picture and acting all suspicious and illegal less of a sign to anyone that there's something wrong with the picture?
Talking about overkill...
It just didn't make any sense to me, that's all.